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added special function to patch NaN's in image. call this function from bilateralfilter (should fix bug #1811)

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This commit is contained in:
Vadim Pisarevsky 2012-04-24 15:16:21 +00:00
parent 47ee844df6
commit 866d8c0cfa
3 changed files with 26 additions and 0 deletions
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3
modules/core/include/opencv2/core/core.hpp
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@ -2214,6 +2214,9 @@ CV_EXPORTS_W void magnitude(InputArray x, InputArray y, OutputArray magnitude);
//! checks that each matrix element is within the specified range.
CV_EXPORTS_W bool checkRange(InputArray a, bool quiet=true, CV_OUT Point* pos=0,
double minVal=-DBL_MAX, double maxVal=DBL_MAX);
//! converts NaN's to the given number
CV_EXPORTS_W void patchNaNs(InputOutputArray a, double val=0);
//! implements generalized matrix product algorithm GEMM from BLAS
CV_EXPORTS_W void gemm(InputArray src1, InputArray src2, double alpha,
InputArray src3, double gamma, OutputArray dst, int flags=0);

22
modules/core/src/mathfuncs.cpp
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@ -2186,6 +2186,28 @@ bool checkRange(InputArray _src, bool quiet, Point* pt, double minVal, double ma
}
void patchNaNs( InputOutputArray _a, double _val )
{
Mat a = _a.getMat();
CV_Assert( a.depth() == CV_32F );
const Mat* arrays[] = {&a, 0};
int* ptrs[1];
NAryMatIterator it(arrays, (uchar**)ptrs);
size_t len = it.size*a.channels();
Cv32suf val;
val.f = (float)_val;
for( size_t i = 0; i < it.nplanes; i++, ++it )
{
int* tptr = ptrs[0];
for( size_t j = 0; j < len; j++ )
if( (tptr[j] & 0x7fffffff) > 0x7f800000 )
tptr[j] = val.i;
}
}
void exp(const float* src, float* dst, int n)
{
Exp_32f(src, dst, n);

1
modules/imgproc/src/smooth.cpp
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@ -1439,6 +1439,7 @@ bilateralFilter_32f( const Mat& src, Mat& dst, int d,
// temporary copy of the image with borders for easy processing
Mat temp;
copyMakeBorder( src, temp, radius, radius, radius, radius, borderType );
patchNaNs(temp);
// allocate lookup tables
vector<float> _space_weight(d*d);